cdnjs is a free distributed JS library delivery service.
Envoy is an open-source edge and service proxy, designed for cloud-native applications.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
JSDelivr is a free public CDN for open-source projects. It can serve web files directly from the npm registry and GitHub repositories without any configuration.
Magnific Popup is a responsive lightbox & dialog script with focus on performance and providing best experience for user with any device.
Open Graph is a protocol that is used to integrate any web page into the social graph.
OWL Carousel is an enabled jQuery plugin that lets you create responsive carousel sliders.
Prism is an extensible syntax highlighter.
Ruby on Rails is a server-side web application framework written in Ruby under the MIT License.
Select2 is a jQuery based replacement for select boxes. It supports searching, remote data sets, and infinite scrolling of results.